The aim of this method is to provide a basis for uncertainty calculations for testing/calibrating/verifying the flow measurement part of water and heat meters. The method is designed for being used as a guideline in combination with existing standards for flow measurement and uncertainty calculations.

This Nordtest method is intended to be used in testing ventilation filters in their normal operating conditions. The purpose of the test is to determine if the fractional efficiency of the filter(s) differs significantly from that expected from the laboratory tests.

The objective of the test method is to test the efficiency of anti-scale devices. The efficiency is determined by measuring the amount of scale on a heating element in a water heater equipped with treated water compared with the amount of scale on a blind installation without water treatment.

The test method is designed for laboratory testing of control systems for direct acting room heaters, primarily for single family houses. This method denotes such a system as an electric-heat controller. The electric-heat controller may consist of either a central unit or several individual or coordinated local units.

The aim of this method is to provide a simple test for documenting that, on completion of the installation, a hot water floor heating system fulfils design specifications for heating requirements. In addition, the method also requires the installer to provide full documentation of the floor heating installation.

This Nordtest method is intended to be used in the testing of fibrous filter materials, The purpose of the test is to determine whether the efficiency of a filter material is dependent on the electrostatic removal mechanism and to provide quantitative information about the importance of the electrostatic removal mechanism.

This Nordtest method provides the general conditions as well as references to specific methods to be applied in field testing and presentation of performance for heat pumps and refrigeration equipment.

This method determines the overall function of the ventilation system by measuring the carbon dioxide, CO2 generated by the occupants. The primary intention is to measure the room air concentration, CR with one gas analyser. However by using two or more gas analysers the effectiveness or local ventilation index can also be obtained.

The objective of a one-year outdoor exposure under stagnation conditions is to ascertain whether the design of the collector has serious shortcomings in respect of design details or choice of materials that would degrade its pet-formante under realistic operating conditions.

The purpose of these tests is to determine the ability of a collector cover plate to withstand the uniformly distributed loading resulting from positive and negative wind pressures and positive snow pressure.

This Nordtest method shows a test and calculation model for the assessment and comparison of annual efficiencies of small primary heating plants, especially non-condensing oil or gas fired boilers for central heating plants in one or two-family houses.

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Nordtest

Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.